Lock



J E. THERIOT Feb; 20, 1934.

LOCK

Filed April 18, 1933 2 Sheets-Sheet 1 .IJVVE' TOR.

W, ATTORNEY r19 uRE J. E. THERIOT Feb. 20, 1934.

LOCK

Filed April 18, 1933 2 Sheets-Sheet 2 Fr; ans: 5

4 E m m 0 I IV YEA Z OR A TI'OR/VE Patented Feb. 20, 1934 Y UNiTED-STATES PATENT OFFICE Application April 18, 1933. Serial No. 666,636

'1 Claim. (01. 70-53) The present invention relates particularly to a lock of the permutation type. I

It is one object of theinvention to provide a lock of the character indicated that does not make use of the usual form of tumbler and that eliminates the clicking associated with such tumblers and consequently removes that feature as a means for picking out the combination of the lock.

It is, therefore, an object of the invention to provide a lock of the character indicated in which the correct combination required to open the same cannot be ascertained merely through the sense of touch or hearing.

It is also an object to provide a lock of the character indicated that will permit an almost unlimited number of combinations of locking elements, and yet be simple in form and construction, economical to manufacture, quickly and easily set for any desired combination, and highly efficient in its, practical application.

In the drawings:

Figure 1 is an outside elevation of the look embodying my invention.

Figure 2 is a partial section on 22, Figure 1.

Figure 3 is a section on 3--3 of Figure 2, a part being broken away.

Figure 4 is a section on line i-4 of Figure 3.

Figure 5 is a section on the line 5-5 of Figure 3.

In the particular embodiment of the invention herein disclosed I show at 1 a case having front and back plates 2 and 3.

At a is the locking bolt passing through openings as 5 in one edge of the case and slidably mounted in a guide 6 in the bottom of the case. On the bolt is formed a rack 7, and a stop 8 is provided to limit the inward movement of the bolt.

At 9 is shown a pinion meshing with rack '7 and rotatably mounted in bearings 10 in-case 1.

A pawl is shown at 11 rotatably mounted in a bearing 12 in case 1 and having one end as 13 adapted to engage a notch 14 inpinion 9 to prevent rotation of the same, the other end as 15 paralleling the side or" the case to a given point as hereinafter described. A spring as 16 is mounted on the pawl to normally hold the same in engagement with the pinion 9, and a means as 17 is provided on the back of the case on pawl 11 whereby the same may be moved to free the bolt, and a knob 18 is mounted on the pinion 9 on the front of the case thereby providing an adjusting means whereby the bolt may be thrown when the pawl is disengaged from the said pinion.

When the bolt is operated to a locking position it is automatically locked in place as above de- 60 scribed, and can only be released and withdrawn by manipulation of the pawl from the inner. side of the case, or by operating the mechanism now to be described from the outer side of the case.

This last mentioned mechanism comprises a a5 disc 19 having its outer surface lying flush with the face 2 of the case 1, the body of the disc fitting in an opening 20 in the said case and having a flange 21 overlying the inner side of the plate 2 as shown.

A pin 22 is mounted in the center of the disc 19 and extends at right angles thereto into the interior of case 1. In the present case five gears as 23, 24, 25, 26 and 27 are mounted on pin 22 with spacing washers 28, each gear having a ra- 75 dial slot formed therein as at 23a, 24a, 25a, 26a, 27a. 7

Rotatably mounted in disc 19 and passing therethrough adjacent the periphery thereof, are six pins as 29, 30, 31, 32, 33, 34.

The pin 29 carries a knob 29a having a letter as at 2% marked thereon, and also displaying an annular row of figures as at 29c. On the inner end of the pin is mounted a gear 29d to mesh with gear 23 on pin 22.

The pin 30 carries parts 30a, 30b, 300, similar to those on pin 29, and a gear 30d meshing with gear 2% on pin 22.

Likewise pins 31, 32, 33 carry similar parts indicated by similar numerals followed by ap- 00 propriate letters, but carrying gears 31d, 32d, 33d, meshing with gears 25, 26, 27, respectively, on pin 22.

On pin 34 is a segmental gear or pinion 34a meshing with a rack 34b mounted in a guide 340 95 and carrying a finger 34d. adapted to engage the several slots in the gears 2327. The pin 34 also carries a knob 3ie displaying a letter 34f and an annular row of figures 34g. The finger 34d is projected from the front toward the rear 100 side or" the case in parallel relation to the pin 22 and extends beyond the last gear thereon,

27, to engage the end of the pawl 11 and operate the same when the disc 19 is rotated.

At 35 is an annular row of figures displayed upon the face of plate 2 in concentric relatio to disc 19.

In constructing this look the slots in the several gears 23 to 27 bear a fixed relation to the indicia appearing upon the face of the lock. it 110 iii being assumed in the present instance that the slots 23a to 27a are in alignment when the numbers on the several knobs 29a to 33a are in the positions shown relative to the annular row of numbers 35. In this case the reading would be as follows: L2-19, H1 23, A73, E67, Z3 /z-ll.

But with the setting so far accomplished it still remains to operate the knob K tothrow the finger 3411 into engagement with the aligned slots whereupon the disc 19 and all of the parts thereon may be rotated to cause the end of the finger 34:1 to engage the end of the pawl 11 whereby to release the bolt and permit its being withdrawn as described.

The lock may be set to any desired combination by merely changing the position of the several gears 23 to 2'7 with relation to the actuating gears.

It is to be understood, of course, that while I have herein shown and described but one specific embodiment of my invention, changes in form, construction, and method of assembly and operation may be made within the scope of the appended claim.

I claim:

A look mechanism comprising, a casing, a

locking element adjustably mounted therein, adjusting means for the element, means normally engaging the adjusting means to lock the same against movement, and means for actuating the locking means to release the adjusting means, said means comprising, a disc rotatably mounted in the casing wall, a plurality of axially aligned toothed wheels mounted on the axis of the disc and within the casing, toothed wheels rotatably mounted on the disc and each meshing with one of the first mentioned toothed wheels, an exteriorly accessible actuating knob for each of the second mentioned toothed wheels, each knob having an annular row of indicia displayed thereon, the casing having an annular row of indicia displayed thereon and encompassing the several knobs, and an additional knob similarly disposed on the disc and having means disposed within the casing for engaging all of the first mentioned toothed wheels and disposed to release the locking means when so engaged, the said first mentioned toothed wheels having alignable slots formed therein to receive said last mentioned means.

JAMES E. THERIOT. 

